Samsung Galaxy Note 9 vs Xiaomi Redmi 3x: specs comparison

Key differences

Calculated from recorded specifications using minimum difference thresholds. These are differences, not an overall ranking. For three phones, numeric highlights compare the two extremes.

Display technology

OLED versus LCD

Galaxy Note 9:

OLED

Redmi 3x:

LCD
Weight

Redmi 3x: 57 g lighter

Galaxy Note 9:

201 g

Redmi 3x:

144 g
Width

Redmi 3x: 6.8 mm narrower

Galaxy Note 9:

76.4 mm

Redmi 3x:

69.6 mm
Screen diagonal

Redmi 3x: 1.4 in smaller diagonal

Galaxy Note 9:

6.4 in

Redmi 3x:

5 in
Rear camera layout

Galaxy Note 9:

Dual

Redmi 3x:

Single
Height

Redmi 3x: 22.6 mm shorter

Galaxy Note 9:

161.9 mm

Redmi 3x:

139.3 mm

Physical size

Relative size, not calibrated actual size. Front and side outlines share one scale and a bottom baseline. Generic outlines use recorded body dimensions, excluding camera bumps.

1. Galaxy Note 9

Height:

161.9 mm +22.6 mm versus Redmi 3x
Width:

76.4 mm +6.8 mm versus Redmi 3x
Depth:

8.8 mm
2. Redmi 3x

Height:

139.3 mm
Width:

69.6 mm
Depth:

8.5 mm

Weight

Bars start at zero and share a scale within this chart.

1. Galaxy Note 9

201 g

+57 g versus Redmi 3x
2. Redmi 3x

144 g

Screen size

Approximate rectangular screens calculated from recorded diagonal and aspect ratio at one relative scale. Rounded corners and cutouts are not subtracted. These are not phone outlines or calibrated actual sizes.

1. Galaxy Note 9

Screen diagonal:

6.4 in

Aspect ratio (height:width):

18.5:9

Approximate rectangular screen area:

104 cm²
2. Redmi 3x

Screen diagonal:

5 in

Aspect ratio (height:width):

16:9

Approximate rectangular screen area:

68.9 cm²

Galaxy Note 9 has approximately 50.8% more rectangular screen area than Redmi 3x.

Memory variants

Each row compares the same storage capacity. Cells show recorded RAM alternatives, not combined maxima. Not recorded does not mean unavailable in every market.

Recorded RAM for Galaxy Note 9, Redmi 3x, compared at the same storage capacity.
Storage	Galaxy Note 9	Redmi 3x
32 GB	Unknown	2 GB RAM

Galaxy Note 9: Original memory entry

512 GB · 8 GB RAM 128 GB · 6 GB RAM

Practical features

Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

1. Galaxy Note 9

NFC:: Yes
Headphone jack:: Yes
Memory card support:: See details microSD · up to 512 GB (uses SIM 2 slot) - dual SIM model only

2. Redmi 3x

NFC:: Unknown
Headphone jack:: Yes
Memory card support:: See details microSD · up to 256 GB (uses SIM 2 slot)

Battery capacity

Capacity is not battery life. No endurance test is implied.

Recorded battery capacity

Bars start at zero and share a scale within this chart.

1. Galaxy Note 9

4000 mAh
2. Redmi 3x

4100 mAh

+100 mAh versus Galaxy Note 9

Specifications

Open a section for more detail. On narrow screens, swipe sideways or use Left/Right arrow keys while the table is focused. Unknown means missing data, not No. Recorded zero values are shown as recorded.

1. Galaxy Note 92. Redmi 3x

Everyday essentials

Everyday essentials — specifications for Galaxy Note 9, Redmi 3x.
Specification	Galaxy Note 9	Redmi 3x
Dimensions (HxWxD)	161.9 Х 76.4 Х 8.8 mm	139.3 Х 69.6 Х 8.5 mm
Weight	201 g	144 g
Technology	Super AMOLED	IPS LCD
Screen size	6.4" inch	5" inch
Screen resolution	1440 x 2960 px	720 x 1280 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.	512 GB 8 GB RAM 128 GB 6 GB RAM	32 GB 2 GB RAM
Memory card support	microSD up to 512 GB (uses SIM 2 slot) - dual SIM model only	microSD up to 256 GB (uses SIM 2 slot)
Battery Capacity is not battery life. No endurance test is implied.	4000 mAh Non-removable Li-Ion	4100 mAh Non-removable Li-Ion
Operating system OS	Android 8.1 (Oreo) upgradable to Android 9.0 (Pie); One UI	Android 6.0.1 (Marshmallow); MIUI 7.3
Chipset	Exynos 9810 Octa (10 nm) EMEA -Qualcomm SDM845 Snapdragon 845 (10 nm) USA/LATAM China	Qualcomm MSM8937 Snapdragon 430 (28 nm)
NFC	Yes	Unknown
Headphone jack	Yes	Yes

Display

Display — specifications for Galaxy Note 9, Redmi 3x.
Specification	Galaxy Note 9	Redmi 3x
Touchscreen	capacitive touchscreen	capacitive touchscreen
Display colors	16M	16M
Screen area	103.2 cm2	68.9 cm2
Screen format	18.5:9 (height:width)	16:9 (height:width)
Screen to body ratio	83.4%	71.1%
PPI /points per inch/	516 PPI	294 PPI
Screen protection	Corning Gorilla Glass 5	Unknown

Camera and Video

Scores marked * are historical catalogue entries. Test conditions are unspecified; no new testing is implied.

Camera and Video — specifications for Galaxy Note 9, Redmi 3x.
Specification	Galaxy Note 9	Redmi 3x
Rear camera, main	12 MP Dual	13 MP Single
Camera specs	12 MP f/1.5-2.4 26mm (wide) 1/2.55'' 1.4µm dual pixel PDAF OIS -12 MP f/2.4 52mm (telephoto) 1/3.4'' 1.0µm AF OIS 2x optical zoom	13 MP PDAF f/2.0
Functions	Dual video call Auto-HDR	LED flash HDR panorama
Video	1440p@30fps	1080p@30fps
Front camera, selfie	8 MP Single	5 MP Single
Specifications	8 MP f/1.7 25mm (wide) 1/3.6'' 1.22µm AF	5 MP f/2.2
DxOMark Main Score *	103	Unknown
DxOMark Photo *	96	Unknown
DxOMark Video *	86	Unknown
DxOMark Selfie Score *	92	Unknown

Performance

Scores marked * are historical catalogue entries. Test conditions are unspecified; no new testing is implied.

Performance — specifications for Galaxy Note 9, Redmi 3x.
Specification	Galaxy Note 9	Redmi 3x
Processor CPU	Octa-core (4x2.7 GHz Mongoose M3 & 4x1.8 GHz Cortex-A55) EMEA -Octa-core (4x2.8 GHz Kryo 385 Gold & 4x1.7 GHz Kryo 385 Silver) USA/LATAM China	Octa-core 1.4 GHz Cortex-A53
Graphics processor GPU	Mali-G72 MP18 EMEA -Adreno 630 USA/LATAM China	Adreno 505
Antutu 7 score *	249456	35195
GeekBench 4 Single Core *	2358	632
GeekBench 4 Multi-Core *	8531	1774
GeekBench 4 RenderScript *	9353	1822
Antutu 8 score *	320265	Unknown
GeekBench 4 Battery *	5154	Unknown
GeekBench 5 Single Core *	480	Unknown
GeekBench 5 Multi-Core *	2002	Unknown

General specs

General specs — specifications for Galaxy Note 9, Redmi 3x.
Specification	Galaxy Note 9	Redmi 3x
Release date	2018 August	2016 June
Colors	Metallic Copper Lavender Purple Ocean Blue Midnight Black Pure White Alpine White	Gold Dark Gray Silver
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.	750 EUR	170 EUR
Body build	Front/back glass (Gorilla Glass 5) aluminum frame	aluminum body plastic ends

Communication and Connectivity

Communication and Connectivity — specifications for Galaxy Note 9, Redmi 3x.
Specification	Galaxy Note 9	Redmi 3x
SIM card	Single SIM (Nano-SIM)Hybrid Dual SIM (Nano-SIM dual stand-by)	Hybrid Dual SIM (Micro-SIM/Nano-SIM dual stand-by)
Network	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) CDMA 800 / 1900 - USA -3G - HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 CDMA2000 1xEV-DO - USA -4G - LTE band 1(2100) 2(1900) 3(1800) 4(1700/2100) 5(850) 7(2600) 8(900) 12(700) 13(700) 17(700) 18(800) 19(800) 20(800) 25(1900) 26(850) 28(700) 32(1500) 38(2600) 39(1900) 40(2300) 41(2500) 66(1700/2100) 71(600) - Global LTE band 1(2100) 14(700) 29(700) 30(2300) 46 71(600) - USA	Show all network frequencies: -2G - GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 / 1900 -3G - HSDPA 850 / 900 / 1900 / 2100 TD-SCDMA CDMA2000 1xEV-DO -4G - LTE band 1(2100) 3(1800) 7(2600) 38(2600) 39(1900) 40(2300) 41(2500)
Speed	HSPA 42.2/5.76 Mbps LTE-A (5CA) Cat18 1200/200 Mbps	HSPA LTE EV-DO Rev.A 3.1 Mbps
GPRS	Yes	Yes
Edge	Yes	Yes
Wi-Fi	Wi-Fi 802.11 a/b/g/n/ac dual-band Wi-Fi Direct hotspot	Wi-Fi 802.11 b/g/n Wi-Fi Direct hotspot
GPS	Yes with A-GPS GLONASS BDS GALILEO	Yes with A-GPS GLONASS BDS
USB	3.1 Type-C 1.0 reversible connector	microUSB 2.0
Bluetooth	5.0 A2DP LE aptX	4.1 A2DP

Music and Audio

Music and Audio — specifications for Galaxy Note 9, Redmi 3x.
Specification	Galaxy Note 9	Redmi 3x
Radio	No	FM radio
Others	HDR10 -Always-on display 32-bit/384kHz audio -Active noise cancellation with dedicated mic	Active noise cancellation with dedicated mic

Other features

Other features — specifications for Galaxy Note 9, Redmi 3x.
Specification	Galaxy Note 9	Redmi 3x
Dop	Sensors Iris scanner fingerprint (rear-mounted) accelerometer gyro proximity compass barometer heart rate SpO2 - Samsung DeX (desktop experience support) -Fast battery charging (Quick Charge 2.0) -Qi/PMA wireless charging (market dependent) -ANT+ -Bixby natural language commands and dictation - Samsung Pay (Visa MasterCard certified) -IP68 dust/water proof (up to 1.5m for 30 mins) -Stylus (Bluetooth integration) - SM-N960F/DS (Global); SM-N960U (USA); SM-N9600/DS (LATAM Brazil China)	Sensors Fingerprint (rear-mounted) accelerometer gyro proximity compass Infrared port - Fast battery charging

Samsung Galaxy Note 9 vs Xiaomi Redmi 3x